A herring gull and a black-backed gull are different biological species
a. true
b. false
Ans: b. false
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The first truly living cells must have been prokaryotic in structure
Indicate whether the statement is true or false.
What is the result when airborne sulfur and nitrogen oxides coat dust particles?
a. wet acid deposition b. dry acid deposition c. a chemical reaction that produces sulfuric and nitric acids d. wet acid deposition and increased soil pH when dust settles e. dry acid deposition and reduced soil pH when dust settles
Some breast cancer cells have receptors for ____, which encourages their growth and division
a. testosterone b. estrogen c. glucagon d. insulin e. prolactin
A chemical agent that dissolves lipids can damage
A) cells. B) bacterial endospores. C) enveloped viruses. D) nonenveloped and enveloped viruses. E) cells and enveloped viruses.